Entry door electronic lock

I would like to use a Keyduino to scan a tag and then trigger a relay from relay shield to trigger electronic lock on an entry door. I would also like an exit button on the inside of the door to press to trigger the lock to let you back out the door without the need to scan tag. Basically and RFID door lock system but the keyduino. I have the lock and keyduino just don't understand the code part just yet when adding a relay shield.

Hi Kthorpe,
If you are using the relay shield from elecrow, this is the procedure to make your project:
- upload the sketch relay_shield from the librairy
- scan your NFC tag with the Serial monitor open. It should answer you the ID of the tag
- add the ID here instead of the cross : String NFC_KEY_1 = "XXXXXXXXXXXXXX";
- reupload the modified sketch and re-scan your tag

If you have some trouble, just send me the ID, I will make the change with the sketch.

Bye,
Pierre